Description

Bis(4-Nonylphenyl) Tridecyl Phosphite is a high-performance organophosphite antioxidant and secondary stabilizer. This compound is critical for protecting polymers and synthetic materials from oxidative degradation and thermal stress during processing and long-term use. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product durability and lifespan.

Application

• Primary and secondary antioxidant in polyolefins (PP, PE) and other polymers.
• Stabilizer for synthetic lubricants and hydraulic fluids to prevent oxidation and viscosity breakdown.
• Processing stabilizer for engineering plastics and thermoplastic elastomers (TPE).
• Additive in adhesive and sealant formulations to improve heat stability.
• Stabilizing agent for synthetic rubbers against thermal aging.
• Co-stabilizer in PVC and other halogen-containing polymer systems.
• Protective additive in hydrocarbon-based fuels and oils.
• Intermediate in the synthesis of other specialized phosphite stabilizers.

Basic Information

Product Name	Bis(4-Nonylphenyl) Tridecyl Phosphite
CAS No.	84787-78-0
Molecular Formula	C47H73O3P
Molecular Weight	717.04 g/mol
Synonyms	Tridecyl Bis(4-nonylphenyl) Phosphite; Phosphorous Acid, Tridecyl Bis(4-nonylphenyl) Ester; Tris(4-nonylphenyl) Phosphite (mixed isomer); TNPP (related phosphite class); Antioxidant 168 (common industry designation); Bis(para-nonylphenyl) Tridecyl Phosphite; Nonylphenyl Phosphite; Polymeric Phosphite Stabilizer
EINECS	Contact for details

Quality Control

Our Bis(4-Nonylphenyl) Tridecyl Phosphite is manufactured under strict quality management systems. Each batch undergoes rigorous analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	Clear, viscous liquid
Color (APHA)	≤ 50
Identification (IR)	Conforms
Assay (Phosphorus Content)	≥ 98.0%
Acidity (as H3PO4)	≤ 0.05%
Moisture (KF)	≤ 0.1%
Refractive Index (nD20)	1.520 - 1.530
Density (g/mL at 20°C)	0.970 - 0.990

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.